Here is my humble donation for your community, so I will not feel like reading here for free )

I made short video about levels of electromagnetic radiation that Kindle 4 emits while connected to Wi-Fi network.

About readings of my measurement gadget - guys, who made this gadget, recommend levels of 1-10 uW/m2 (micro watts per square meter) for sleeping area.
I think that if you take something to read, then you do it in your not working time, when you want to rest, so such radiation level is preferable.
Conclusion is - set your wi-fi off and don't use it )

Wireless router will give you readings like 2000-5000 uW/m2, so its really unhealthy to have wireless router in your apartment. Same to DECT phones.

Well, all written above is my opinion and I don't want to discuss it here.
Everyone who wants to know more about the radiation problem invited to see site www.bioinitiative.org and read BioInitiative Report.

In your video, your measuring device is too close to the kindle. It also has a directional antenna that is not pointing at the kindle, making the measurement less accurate. RF radiation drops off rapidly as distance increases. Unless you use your kindle as a pillow, it should not be a problem. Whereas cellphones ARE held close to your head and subject your brain to much more radiation due to very close proximity, and at a much higher power level to reach a distant cellphone tower.

I would not worry about the kindle wifi. It is mostly "receive only" with only very short transmit bursts. Radiation damage is cumulative, and I would worry about talking on a cellphone next to your head for extended periods much more than using kindle wifi at arm's length with only occasional web page refreshes or other wifi activity.

To measure the kindle wifi transmit power EXPOSURE accurately, place the kindle where you store it at night, and place the meter on your pillow with the antenna pointed at your kindle. Then measure it. And remember that it is the AVERAGE power over time (not the PEAK power) that counts (except in extreme cases like over-the-horizon radar transmitters).

2.4 GHz energy is used to heat water molecules (in a microwave oven), which is why it is available for wifi devices. The most damage it could do is cause cataracts if your eyes get heated too much, and it would take strong microwave radiation to do that (like from a microwave oven, not from a battery powered kindle). In the olden days, military radar operators would stand in front of the microwave radar dish to warm up, and a melted chocolate bar in a pocket was the inspiration for microwave ovens. It is not as dangerous as ionizing radiation from nuclear decay. It is only a problem if sensitive organs get overheated (especially the corneas of the eyes). On the other hand, low frequency electromagnetic energy (such as under power lines) can have biological effects. It can promote bone healing, and it can make crops under it grow faster. Perhaps it can cause cancer from uncontrolled stimulation of growth (especially in children). But microwave energy is generally safe at low levels like wifi uses.

It is also interesting that the bioinitiative.org domain name is owned by somebody who works for a WIRED communications provider. Using a "non-profit" website to spread FUD against the competition (wireless communications providers) perhaps?

geekmaster,
Thank you for your reply)
I work for money, measuring levels of radiation in work places and private places )

First of all I want to say that I divide radiation from all applications into three big categories:
1) Low frequency Magnetic field (from 1 to 100 000 hz) power lines, wiring inside houses, motors. Measured in mili Gauss or nano Tesla.
2) Low frequency Electric field (dirty electricity) - wiring inside houses, many many other applications (from 1 to 500 000 hz) Measured in Volts per meter.
3) High frequency radiation that comes from All wireless applications, cellphones, radars, radio, etc.

1,2 kinds vanish fast with distance, but third kind is not vanishing. Its so called filling radiation - it reflects many times from walls, metals, ets. The only thing that can catch it in modern cities is human body. OK, some plants, water too )

I made this video for just evaluation what Kindle 4 gives.
I don't have any other device with smaller antenna to measure exact signal, but there is no need in it. Its roughly measured stuff.

I agree the values that I will measure at 5 meters from Kindle will be lower, but if we will talk about Wi-Fi from laptop, then level that we will measure near to it will be very high and in 5 meters from it it will be high )
Anyways 1000 is very high for me and 100 is high. But for government of Israel the upper limit is 400 000, so I have to think for myself alone.

There are many people (even people I know) that have serious problems with health from radiation. You can think about it as about allergy or something like that. That's why any even weak source of radiation is bad for them.

The real problem of this radiation is how it affects cells in the body. Many systems in cells just stop to work properly and if person is 24/7 in low levels radiation polluted environment, then nothing happens to him, but his body makes a lot of work that not needed. You can think about it as person having huge amount alcohol in blood, but he is not drunk. Weak, sleepy all the time. And body makes a lot of work to get rid of alcohol and other related poisons. This takes huge amount of resources that could be spent on having fun and feeling good.
People used to think about damage of radiation as about heating damage. And this is wrong way to walk on.

Tumors is something that happens because of real abuse of cellphones.
But we should look on wider picture that shows that many many people are suffering (a little), and even don't know about it.

So less exposure you have, better you feel. And this is right for ALL people.
You must irradiate yourself very hard to start to feel the difference immediately - such people called EHS - EMF Hyper Sensitives.
Give me any healthy person. Only using all legal technologies like Wi-Fi, DECT, 3G, etc I will make him EHS within one year.
Any person become sick with time. And this is what I know from my experience.

Yes, you are right, talking on cellphone is muchmuchmuch worse then downloading books to Kindle.
But kind of radiation is not cumulative as you used to think about it.
This is not x-rays radiation or gamma, or betta.

I don't know about bioinitiative.org, but this report they have is very very big source of works to see. And if you spend enough time on it, you will change your mind from "oh, forget about it, its all jokes" to "well, this is one of things we should think about very very good" ) I changed my mind not by reading and understanding, but by losing part of my health in the past. And this is way that 99.99% of people will go to get understanding of this topic.

I am agree that EMF can be used in many fields very effectively, but such use must be done in safe way. And this is not the picture today.

I am convinced already, that many things like sugar in blood, depressions, insomnia, etc are caused by such "not harmful" radiation. And I think its only matter of time when all this stuff will be proven. Remember how it was with cigarettes? Same here now with wireless, but much much wider problem.

I met many people who work constantly in offices where they have repeaters (cell phone signal boosters?) installed above their heads. All of them look similar, you don't have to be a specialist to see that they ALL are red skinned with eyes very red, with black marks under their eyes, with skin problems, with hair problems - and this is what I see only visually, without asking them any questions. They are young - 30-40 years old. They sit there for last 5-10 years and I don't know what will happen to them in observable future.
Sure, I don't talk to all of them about the matter. Only to those who pay me, who want to know stuff, to see what my gear shows )

"For frequencies between 100 kHz and 10 GHz, Seq, E² and H² must be averaged over any 6 minute period."

Assuming that a body cross-section of 1 square meter is exposed to a plane wave at 2.4GHz, the standard of exposure is 1W for professional exposure and 10W for consumer exposure (except in Russia, where it is only 0.01W). Apparently that means that you should not have a 100mW device in your pocket next to your skin in Russia, but 10mW is okay).

Anyway, most studies that talk about cancer concerns from RF exposure have to do with ELF (essentially power-line frequencies).

But people are free to believe whatever they choose in most countries, at least until mind-reading machines are perfected. Some people are willing to spend thousands of dollars on an E-Meter (a glorified ohm-meter) from the Church of Scientology.

And now that the neural code has been cracked, we will have direct neural interfaces where machines can inject sensory signals directly into our brains, including vision (to correct blindness). I can hardly wait, but some people will certainly not want electric fields injected directly into their bodies INTENTIONALLY. Oh well...

I have been waiting for my direct neural interface most of my life. Electromagnetic fields do not scare me (I have an amateur radio license, and I have designed antennas and transmitters and I understand RF radiation patterns).

Someone working in an office environment has many factors at play. Overhead fluorescent lights on magnetic ballasts flickering at 60 hz. Flicker plus audible hum is not all that comfortable for most. Then the overhead lights have glare.. this is why I wear my visor in the office environment so the glare isn't always shining into my eyes. Then another factor at play is old buildings have poor HVAC systems.. perhaps the ventilation is substandard and some mold is at play.. or even colleagues who have very kindly agreed to drench themselves in highly fragranced cheap dollar store perfume, and then added aerosol units to the washrooms to really make sure that you inhale as much as possible. So take all of those people, and then have them do what the average person does which is doesn't eat right, doesn't sleep right, doesn't exercise, etc. etc.

It's misleading to blame it all on wifi radiation.

Microwave radiation is on the spectrum that is below infrared. Infrared is heat.. microwaves are even colder than that.

You go on to state that you believe that sugar in the blood, depression, insomnia, etc. are all results of this. Yet, there are many reasons for that to occur.. blood sugar is dietary, perhaps they're eating too much high-fructose corn syrup all day long, insomnia because they're in lit environments or staring at screens late at night which prevents the production of the "go to sleep" hormone (destroyed by blue light), depression is so many factors including the above two, etc.

Try to remember that we all evolved in a radiation polluted environment due to the unshielded nuclear reactor in the sky blasting out full spectrum radiation nonstop. You will never escape it. What needs to be understood is miniscule levels of what is for all intents and purposes non-ionizing heat, is meaningless.

Try to remember that we all evolved in a radiation polluted environment due to the unshielded nuclear reactor in the sky blasting out full spectrum radiation nonstop. You will never escape it. What needs to be understood is miniscule levels of what is for all intents and purposes non-ionizing heat, is meaningless.

And ionizing radiation is much worse than electromagnetic radiation. It is that scary word "radiation" left over from the "cold war" that has some people afraid of wifi and microwave ovens.

The bigger problem is ionizing radiation from the sun (especially near the poles to where the protective magnetic field redirects most of the earth exposure). And where I live we have a lot of granite. It has been estimated that living in a granite building can take years off of your life (statistically speaking). And here we also have radon leaking out of the ground. It has a tendency to stick to the dust that coats the surface of televisions and computer displays (especially the CRT kind). And X-rays from CRTs (which is why they have all that lead in the glass, so do not lick your CRT computer monitor to clean it). Even worse is storing alcohol in leaded crystal decanters, where it can leach out to be consumed. And acidic food on pewter plates, which is what made people think that tomatoes were poisonous in the western world in the past (really just lead poisoning).

And all the chemicals that leach out into the air from plastic furniture and carpeting (especially in modern hermetically-sealed "energy efficient" homes), and all that "generally recognized as safe" food coloring and artificial flavoring, and the air we breathe. And yes, all that darned corn syrup in just about EVERYTHING because it is so cheap when it is government subsidized (as in the good old USA).

Anyway, life is a terminal disease, so get over it. I want my Radio Frequency toys.

Living in a stressful relationship can take more years off your life than exposure to EMF. Bad vibes and negative karma are much more devastating.

And do not forget, back before there even WAS man-made EMF, the average human lifespan was only half as long as it is today. Even with all these scary things trying to kill us, we must be doing something right. Just be kind and helpful to others, and we can all live longer and be happier.

Actually, statistics have shown that people who live in areas with HIGH background radiation actually live LONGER. The current theory is that your immune system needs EXERCISE to be able to keep you healthy, and periodic small exposures to pathogens AND IONIZING RADIATION both contribute to long term well-being (much like immunization). Too much of anything is bad for our health, but so it too little...

No need to scare people, unless that is how you make a living.

But there is certainly no need to be afraid of wifi. Just do not use your kindle as a pillow and you should be fine. It is your fear that will eventually take a toll on your health more than the scary technology.

There is small town in Israel. It is located near to place where I live.
Here is a article about it:http://omega.twoday.net/stories/421932/
I also had nice PDF work with map of cancer cases and death cases, but I can't find it now for some reason.

What they had there were levels beneath 100 000 uW/m2 in houses.
And still they got sick and dead. Very fast.
Whole town was afraid of going to doctor, because everyone who went to him was diagnosed cancer (many different types). I talked to people from there, and understood that it was nightmare.

So 10mW/m2 = 10 000 uW/m2 sounds much much better.
But still, for me personally such signal means disaster.

I was in many places and measured many levels and all of them made up in such way that signals from big antennas will not above 20 000 uW/m2. Guys who set up these antennas know, that higher signal will rise problems very fast, so they don't go crazy installing antennas with still legal signal like 300 000 or 400 000 uW/m2.

Guys who make cellphones are not stupid and they write in their instructions that user should not hold device close to your body (but what about head? OMG we put cellphones to our head while talking!) :-)
Why they do this? Because they are smart guys who make money and they don't want to lose it in the future when people will try to sue them) And this is not a precautionary principle (nobody will mark his product as hell dangerous just because "maybe" there is a risk). So risk is on the table, we just must read cellphones manuals and understand what is written there.

I know that there are many skeptic people (naturally, without any relation to communications companies, not interested) and I was one of them, by the way.
I respect people who need to have facts.
For all such people I suppose to do one small test , because own experience is better then 100 facts from other people.
1) Find place with level of 15 000 uW/m2. It maybe some roof of building in city. Found higher level? Better for experiment!
2) Try to live there 24/7 for several days (maybe week) and write what you feel.
3) Come home and read and compare to your regular life.

This is very good test, but not many people accomplished it for clear reason: "Am I stupid to live whole week on some roof?"

When I try to make safe room I try to build it in such way that it will meet three criteria:
1) 0.5 mG of 50 hz magnetic field
2) 1 uW/m2 in all room
3) 0 V/m fo Dirty Electricity electric field.
I live in such safe room.

Funny thing, but when I make call from iphone4 from my room, it gives me signal of 30-40 uW/m2!

In such room already sick person can get rid of headaches, insomnia, depression and I have seen enough cases like that.

If I open my window, I have electromagnetic storm outside: many cell phone antennas opened and hidden are located near to my building, radars from military boats hit very high power pulses (my equipment can't measure them good enough). Previous owner of this apartment sold it and went to other (country!) place because of problems with health.

If you look on all this with open mind, even without background, you start to think: "is this normal? is this good for me or my children? how did we get here? where is the way out?".

But most people don't have open minds and just don't think. They just use and abuse.

I am not Scientologist, I am engineer, I love my numbers that I see on my measuring devices and follow them to get results.

There is small town in Israel. It is located near to place where I live.
Here is a article about it:http://omega.twoday.net/stories/421932/
I also had nice PDF work with map of cancer cases and death cases, but I can't find it now for some reason.

Israel has nuclear weapons in relatively close proximity to population centers (being such a small territory). Isn't that more likely to cause problems than wifi and cellphone exposure. And what about the ELF (power line EMF) that HAS been scientifically shown to be biologically active and has a much farther-reaching electrical field (long wavelength, and thousands of volts carried on high-tension lines/antennas bringing power to neighborhoods). And carcinogens from smoke, and charred meat. At least you won't get killed by bacon over there, but I love my bacon cheeseburgers. Mmm... bacon...

If I am destined to die of corn syrup and bacon poisoning, this is my choice:

But I have already outlived most of my ancestors, and I am surrounded by wifi and I seriously doubt that it will kill me or cause diabetes. However, corn syrup in everything (even the bacon ice cream) surely will...

And I will get my wifi implant as soon as they perfect a bio-powered computer implant with direct neural interface. EMF? Bah humbug! IMHO, of course.

In your case, feel free to wear one of these Faraday suits to bed if that makes you happy:

Correlation does not equal causation.
...
It's misleading to blame it all on wifi radiation.
...
You go on to state that you believe that sugar in the blood, depression, insomnia, etc. are all results of this. Yet, there are many reasons for that to occur.. blood sugar is dietary, perhaps they're eating too much high-fructose corn syrup all day long, insomnia because they're in lit environments or staring at screens late at night which prevents the production of the "go to sleep" hormone (destroyed by blue light), depression is so many factors including the above two, etc.

Yes, you are right, too many factors can play here a role.
But I am sure radiation factor is not the last one (if not the first).
Problem is that if you want to clarify even smallest fact, then you will have to invest a lot of time and money. I try to look on people carefully. Maybe I find what I am looking for, but this is the only way I can make my own research )

So I am asking - Why to rush with this technology??

They are gone completely crazy here in Israel.
They want to put in all schools WI-Fi classes (20-40 computers + router per room) and let to kids be there for 6-7 hours per day. Isn't that overshoot?

They are gone completely crazy here in Israel.
They want to put in all schools WI-Fi classes (20-40 computers + router per room) and let to kids be there for 6-7 hours per day. Isn't that overshoot?

We have entire towns here with no electricity and no motorized vehicles. Horse and buggy baby! These people are called "The Amish". They welcome outsiders to join them if you are willing to accept their ways. They make nice wooden furniture for sale to tourists, and they grow their own food, and they make their own clothing. And we have "mountain folk" too, with no electricity and outdoor toilets (but outsiders are moving in with their solar panels and satellite dishes). EMF exposure is probably closer to your preferred limits in either of those communities.

... I know that there are many skeptic people (naturally, without any relation to communications companies, not interested) and I was one of them, by the way.
I respect people who need to have facts.
For all such people I suppose to do one small test , because own experience is better then 100 facts from other people.
1) Find place with level of 15 000 uW/m2. It maybe some roof of building in city. Found higher level? Better for experiment!
2) Try to live there 24/7 for several days (maybe week) and write what you feel.
3) Come home and read and compare to your regular life.

This is very good test, but not many people accomplished it for clear reason: "Am I stupid to live whole week on some roof?"

That is too subjective. It is too small of a statistical sample. It is not a double-blind study. Therefore, it holds very little weight in the "scientific community". But you are welcome to believe it nonetheless. As I will continue to believe in whatever makes me happy. Even if microwave radiation was somewhat unsafe at levels used by the kindles, for many people the benefit outweighs the cost by a significant margin, so any regression of wireless technology is rather unlikely unless Al-Quaida or the Taliban imposes their "laws" on us. But then even they like their cellphones, especially when used to trigger roadside bombs, so they may prefer to use wireless technology to acquire and maintain more control over their domain.

My biggest fear of technology is how it will be misused by tyrants against us. That and all the corn syrup and other corn-derived food ingredients in my diet, which is nearly unavoidable where I live. I am much more afraid of my food than EMF, as I mentioned before. You need to establish priorities for your fears. And you need to do a cost/benefit analysis. If it does more good than harm, it will be here for a long time, unless it is harmful to the acquisition of power for those who control us.

Special: If you are under EM attack or harassment, you'll need all four just as soon as possible!: "UNDER ATTACK," "MIND CONTROL," "SUBLIMINAL MIND CONTROL," and "EM BRAINBLASTER." Combined price is only $96!

P.S. I actually OWN a copy of the "Electromagnetic Brain Blaster" book.

But then, I still prefer scientific evidence gathered from large statistical sample double-blind experiments with third-party verified repeatable results. I just cannot envision myself sitting alone on a roof for a week to prove something to myself about physical and mental health effects of EMF exposure in any manner that I would find convincing. I would think that the experience alone would affect the outcome, with or without the EMF. But that is just me...

P.P.S. According to my research (back in the day), it is the EM waveform/repetition/decay rate that determines biological effects. According to some studies (as documented in the EM Brain Blaster book and elsewhere), it is aperiodic repetitions that are the most harmful, because your body is unsuccessful at adapting to an "almost periodic" (syncopated) signal. Although syncopation in music adds interest, it also causes stress. This is why TENS machines (which reduce pain with electrical stimulation of nerves) have regulations controlling what waveforms/repetition/decay rates are allowed.

Besides ELF exposure having been repeatedly proven to be more unhealthy than microwave exposure, typical ELF signals are measured in MEGAwatts, while wifi signals are measured in MILLIwatts (with a signal strength that decays as the square of the distance). High frequencies have a penetration depth relative to their wavelength. High frequencies like microwave exhibit a "skin effect" and do not penetrate very deeply. And 2.4GHz in particular is absorbed by water, so most of the energy would be dissipated at or near the surface of the skin.

Even your referenced bioinitiative book (http://www.bioinitiative.org/freeacc...ocs/report.pdf) keeps saying "we don't know" and tries to use ELF studies to prove its cause while lumping ELF and RF together as "EM", which is not really particularly honest, in my opinion. And creating fear of the "we don't know" is just FUD. An author listed in the book is also the contact person (owner) of the domain name, so the entire website is a bit self-serving. And like I said, that person is also an employee of a WIRED communications company, which adds to the self-serving implications.

Despite all of the tax money devoted to studying this issue, there will always be doubters, but there is no need to scare legislators into taking away my technotoys without REAL evidence.

Unless you use your kindle as a pillow, it should not be a problem. Whereas cellphones ARE held close to your head and subject your brain to much more radiation due to very close proximity, and at a much higher power level to reach a distant cellphone tower.

I would not worry about the kindle wifi. It is mostly "receive only" with only very short transmit bursts. Radiation damage is cumulative, and I would worry about talking on a cellphone next to your head for extended periods much more than using kindle wifi at arm's length with only occasional web page refreshes or other wifi activity.

You know, I've never given this a second thought, yet I have spent 2 years sleeping with my kindle or iPhone, and recently, my 7" tablet, under my pillow, reading books to me all night - and day when I'm sick - and I already have a (non-malignant) brain tumor.

It was discovered just before I got a kindle, so I don't blame it on that, but what's crazy is that my docs have seen me do it when I'm in the hospital, and no one has ever said a word about it.

You know, I've never given this a second thought, yet I have spent 2 years sleeping with my kindle or iPhone, and recently, my 7" tablet, under my pillow, reading books to me all night - and day when I'm sick - and I already have a (non-malignant) brain tumor.

It was discovered just before I got a kindle, so I don't blame it on that, but what's crazy is that my docs have seen me do it when I'm in the hospital, and no one has ever said a word about it.

Is it safe if I keep wireless off and use airplane mode on iPhone?

The ELF electric field in the speaker or earbud voicecoils will probably do more damage than the wireless (especially when wireless is turned off), which is extremely unlikely. Brain tumors can be caused by a lot of things more dangerous than cellphones and wifi (which probably cause more car accidents than brain tumors). Genetics has a lot to do with it, as well as inadequate diet and exercise (and not enough sex). Taking vitamin supplements can help, but a well-balanced wholesome organic diet (with all the trace elements missing from chemically "fertilized" depleted soil) is better. And don't forget the sex (if you are an adult). http://www.webmd.com/sex-relationshi...enefits-of-sex